Ampeg Bass heads PR1528HE User Manual

							ProudlyMadeInAmerica
by
INSPIRED BY STEVE BAILEY
AND VICTOR WOOTEN! 
						

							INTRODUCTION:
Inspired by two of the most accomplished bassists of our day, Ampeg’s new PR-1832HE
and PR-1528HE Bass Enclosures are truly a performing musician’s dream come true.
Outstanding sound and legendary Ampeg performance have been embodied in rugged, styl-
ish cabinets which are incredibly road-worthy and surprisingly manageable. 
The PR-1832HE is a four-way full range bass speaker system inspired by Victor Wooten.
This enclosure packs the punch of traditional 2-10 / 4-10 cabinets, but with the added advan-
tage of the built-in 18 subwoofer. This enclosure is designed for high SPL and low distortion.
The frequency response is smooth and accurate all the way down to 35Hz.
The PR-1832HE features a a single 18, 400 watt, 4 diameter flat wound voice coil sub
low frequency transducer, two 10, 150 watt low frequency transducers, two 6 -1/2, 75 watt
closed-back mid-frequency transducers, and a bullet horn tweeter. This cabinet is biampable
between the 18 sub and the 2-10 low frequency components. Tilt-back cabinet design, 3”
dolly-style casters and a heavy-duty rear bar handle make the cabinet easy to move around.
Heavy-duty self-retracting side handles facilitate loading and unloading.
The PR-1528HE is a three-way full range bass speaker system inspired by Steve Bailey.
This enclosure is a small full range powerhouse with an incredibly smooth frequency
response, designed specifically for true, accurate sound reproduction to please the most
demanding bassist either on stage or in the studio.
The PR-1528HE features a a single 15, 300 watt, 4 diameter flat wound voice coil low
frequency transducer, two 8, 100 watt mid frequency transducers and a bullet horn tweeter.
The cabinet is biampable between the 15 low frequency driver and the 2-8 drivers. Four
removable swivel casters and heavy-duty self-retracting side handles make the cabinet easy
to move.
FEA
TURES:
• Switchable Full Range and Biamp operation.
• High power handling: 400 watts RMS / 800 watts program (PR-1528HE),
600 watts RMS / 1200 watts program (PR-1832HE)
• Rugged carpet covered cabinet with extensive internal bracing, tuned low
frequency section, and internally enclosed mid and high frequency sections.
• Slanted front to accommodate both near and far field use. 
• Road-tough 16GA perforated steel grill.
• Full-range frequency response.
• Neutrik
®Speakon connectors.
PR-1832HE / PR-1528HE Bass Enclosure
CAUTION:THIS UNIT IS CAPABLE OF PRODUCING HIGH SOUND PRESSURE LEVELS. CONTINUED EXPOSURE TO
HIGH SOUND PRESSURE LEVELS CAN CAUSE PERMANENT HEARING IMPAIRMENT OR LOSS. USER CAUTION IS
ADVISED, AND EAR PROTECTION RECOMMENDED IF UNIT IS OPERATED AT HIGH VOLUME. THE CHART BELOW
SHOWS THE U.S. GOVERNMENT’S OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA) REGULATIONS
WHICH WERE IN EFFECT AT THE TIME OF THIS PUBLICATION FOR PERMISSIBLE NOISE EXPOSURE, PER
29CFR1910.95, TABLE G-16:
ACCORDING TO OSHA, ANY EXPOSURE IN EXCESS TO THESE AMOUNTS LISTED ABOVE COULD RESULT IN SOME
HEARING LOSS.
SOUND LEVEL DBA, DURATION PER DAY SOUND LEVEL DBA, DURATION PER DAY
SLOW RESPONSEIN HOURSSLOW RESPONSEIN HOURS90 8 102 1 - 1 1/2
92 6 105 1
95 4 110 1/2
97 3 115 1/4 or less
100 2
Speakon®is a registered trademark of Neutrik USA 
						

							PR-1832HE / PR-1528HE Bass Enclosure
OPERATION:
The PR-1832HE and PR-1528HE are full range speaker cabinets and can be powered by a sin-
gle full range amplifier, or bi-amped with one amp for the lows and another for the mids and highs.
Either the 1/4” speaker jacks or the Speakon
®jacks may be used for connecting to the cabinet. The
two 1/4” jacks are internally wired in parallel to each other, as are the two Speakon®jacks. This
enables daisy-chaining two or more cabinets together, providing you match your amplifier to the over-
all impedance load.
FULL
RANGE OPERATION:
• Set the Mode switch to the “Full Range position.
• 1/4”
JACKS:Connect the output of your amplifier to either of the two 1/4” jacks labeled “Full
Range Inputs (Bi-amp Low Inputs).” Use the remaining 1/4” jack to daisy chain to another cab-
inet, if desired.
• SPEAKON
®JACKS:Connect the output of your amplifier to either of the two Speakon®jacks.
Use the remaining Speakon®jack to daisy chain to another cabinet, if desired. For full range,
wire the Speakon®connectors as follows: 
Pin 1+ : Full Range positive (+)
Pin 1– : Full Range negative (–)
BI-AMP OPERA
TION:
• Set the Mode switch to the “Biamp position.
• Set the crossover point for the amplifiers somewhere in the 100Hz to 300Hz range. Once up
and running, adjustments within this range may be made to suit your personal listening palate.
• 1/4”
JACKS:Connect the output of your low frequencyamplifier to either of the two 1/4” jacks
labeled “Full Range Inputs (Bi-amp Low Inputs).”
• Connect the output of your mid/high frequencyamplifier to the 1/4” jack labeled “Bi-amp High
Input.” (the 1/4” jacks do not allow daisy chaining in the biamp mode.)
• SPEAKON
®JACKS:Connect the Biamp output of your amplifier to either of the two Speakon®
jacks. Use the remaining Speakon®jack to daisy chain to another cabinet, if desired. For
biamping, wire the Speakon®connectors as follows: 
Pin 1+ : Biamp Low positive (+) Pin 2+ : Biamp High positive (+)
Pin 1– : Biamp Low negative (–) Pin 2– : Biamp High negative (–)
Caution: Power handling for certain components can be lower in Biamp mode,
check the label for maximum ratings and use appropriate amplifier settings!
INPUTJACKPLATE (located on rear of cabinet): 
						

							PR-1832HE / PR-1528HE Bass Enclosure
TECHNICAL SPECIFICATIONS: PR-1832HE PR-1528HE
Impedance 4 ohms 4 ohms
RMS Power Handling 600 watts 400 watts
Program Power Handling 1200 watts 800 watts
Frequency Response (-3dB) 42Hz–18kHz  48Hz–18kHz
Frequency Range (-6dB) 38Hz–20kHz 42Hz–20kHz
Low Frequency Limit (-10dB) 30Hz 36Hz
Nominal Sensitivity (1W/1M) 100dB 96dB
Maximum SPL 127dB 122dB
Crossover Frequencies (Internal) 200Hz,1kHz, 5kHz 200Hz, 4kHz
Dimensions (H x W x D) 39 x 24 x 24 27 x 24 x 24
Weight 167 lbs 105 Ibs
DRIVER COMPLEMENT AND RATINGS IN BI-AMP MODE:
Mid/High Frequency Section:
Average Power Handling: 300 watts 200 watts
Impedance 4 ohms 4 ohms
Useful Response 100Hz–20kHz 200Hz–20kHz
Midrange Cone Loudspeakers:
Size: 2 x 10 Cast 2 x 8
Voice Coil: 2.5 Dia 2 Dia
Magnet Wt. 59 oz. 30 oz.
Size: 2 x 6-1/2 –N/A–
Voice Coil: 1 Dia –N/A–
Magnet Wt.: 30 oz. –N/A–
High Frequency Driver: Bullet Horn Bullet Horn
Throat Size: 3/4 3/4
Voice Coil: 1.25 Dia 1.25 Dia
Magnet Wt.: 14 oz. 14 oz.
Low Frequency Section:
Average Power Handling: 400 watts 300 watts
Impedance: 4 ohms 4 ohms
Useful Response: 35Hz–300Hz 45Hz–500Hz
Size: 18 15
Voice Coil: 4 Edge Wound 4 Edge Wound
Magnet Wt. 109 oz. (6.8 lbs) 109 oz. (6.8 Ibs)
Ampeg continually develops new products, as well as improves existing ones. For this reason,
the specifications and information in this publication are subject to change without notice.
Ampeg is proudly Made in America.
©1997 SLM Electronics, 1400 Ferguson Avenue, St. Louis, MO 63133 U.S.A.
P/N 47-426-01 • 12/97